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Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : DHCP vulnerabilities (USN-5658-1)

medium Nessus Plugin ID 165706

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5658-1 advisory.

 It was discovered that DHCP incorrectly handled option reference counting. A remote attacker could possibly use this issue to cause DHCP servers to crash, resulting in a denial of service. (CVE-2022-2928)

 It was discovered that DHCP incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause DHCP clients and servers to consume resources, leading to a denial of service. (CVE-2022-2929)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-5658-1

Plugin Details

Severity: Medium

ID: 165706

File Name: ubuntu_USN-5658-1.nasl

Version: 1.10

Type: local

Agent: unix

Published: 10/5/2022

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2022-2929

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-client, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-relay, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-common, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-client-ddns, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-server, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-server-ldap, p-cpe:/a:canonical:ubuntu_linux:isc-dhcp-dev

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 10/5/2022

Vulnerability Publication Date: 10/5/2022

Reference Information

CVE: CVE-2022-2928, CVE-2022-2929

IAVB: 2022-B-0037

USN: 5658-1